Portable therapeutic lamp



N. E. GOODRICH 4 Dec. 6, 192 7.

ju/el j rrols gooafrzgoi PORTABLE THERAPEUTIC LAMP Flled July 13 1925 IMI all) Patented 6, 192?.

barren stares FAT'ENT- OFFICE;

NGRRIS' eoonaron, or Barren CREEK, MICHIGAN, assrenon TO sAnI'rAnr'u vt Ann HOSPITAL noui rivrnnr CGMPANY, or" BATTLE annex, MICHIGAN, A CORPORATION on MICHIGAN.

PORTABLE THERAPEUTEO LILMP Application filed July 13, 1925.. Serial No. 43,111

This invention relates to incchani "al therapeutic appliances, such as are employed. in hospitals, sauitariunis, physicians oiiices, and homes, and has reference more particularly to a portable therapeutic lain for administering heat and light treatment:

The general aim or object of the invention is to provide a simple, light and easily nianipulated portable therapeutic lamp for ad ministering local applications of heat and light rays to the body of a patient, and which shalt also be well adapted tor use as a bed warmer. More specific objects are,-to pro vide an improved strlnsture of reflector hood or casing combining a high degree of light ness and strength,.to provide a reflector hood or casing that may be applied directly to the skin without discomfort or danger of inflicting burns, to provide, in a lamp of the character specified, improved means for detach ably securing the lamp socket on the back wall of the hood or casing, and to provide improved means for housing the circuit wires of the lamp and a thermostat control therefor in the hood and lamp socket support.

Other objects and many of the attendant advantages of the invention will he a parent to persons familiar with appliances of this general character fronr the following" dc tailed description, taken in connection with the accompanying drawing, wherein I have illustrated one practical and preferred cm bod-iment of the invention, an d in which' Fig. l is a front elevation the lamp;

Fig. 2 is central. vertical sectiomon the line 2+2 of Fig. l, with the twin bulb lamb" and lamp socket appearing; in cle ation;

Fi is a horizontal section on the line 33 of Fig. 1, with the lamp socket appearing: in top plan view and y Fig. 4 is a fragmentary rear elevation of the block that houses the circuit wires and thermostat control device.

Referring to the drawing, designates the body or shell of acon'ibincd lump'hood and reflector, which is preferably given the generally V-shaped form in cross-section illust'rated: in Fig. 3 and is also preferably made'of thin sheet aluminum, a n'ietal which ciicellently combines, for lamp purposes, the qualities of lighlii strength, and ray reiiecting capacity. The upper and lower ends of the body 10 of the hood are closed by flat top and bottom plates 11 and 12,the sire and rear margins of which fit snugly against the side and rear Walls of the hood body IO, and maybe soldered or otherwise attached toinwardly bent flanges or beads 10 on the upper and lower edges of the body membcr lO. The front edges of the body flit-fill ber 10 and its end closures 11 and 12 are rigidly united by a rectangular bounding frame of l' zat insulatingmat t*ia-l. This amass herein shown, comprises vertical side meiii hers 13 and top and bottom members 14: and 15 thatare preferably made of wood. and round in cross-section. As clearly shown in Figs. 9. and 3, the frame men'ibers 13, 4: and 15 are formed with longitudinal kerfs 16 into which the front edges of the nicmbers 10, 1'1 and 12 are entered ,and secured by pins 17 The rectangular frame structure thus applied to the mouth of the hood is made rigid by the application of internal metal corner brackets 18.

Fitted to the curved rear wall of the hood 10 is arelatively thick block 19 of. hard rub-- her, bakelite or any other suitable insulating material, in the rear surface of which are formed longitudinal and transverse grooves or channels 21 and 252, respectively, and a shallow chamber 21 (Fig. l) coincident with part of the groove 21. In the loneieiid. wall 12 is mounted an insulation sleeve or ferrule located directly beneath the lower end of the vertical groove 21; in the block 19.: 'lhrough this sleeve entered the cord carrying the circuit wires and 26 the cord; 24 extending upwardly within the groove 21 to its junction with the transverse groove 22, whence the t-Wo circuit wires 25' and 26 are extended laterally within the groove 22 and from'the latter through trans verse ducts 27 into the lamp socket. In one of the circuit wires (26 shown in Fig. 4-) is interposed a thermostatcon trol comprising aswit ch 26 that occupies the recess or Cilftllle ber 21" and is normally closed. but opens automatically when a predetermined tempera- Eli ture has been reached. This switch therefore precludes the production of temperatures which might be injurious to the patient or result in conflagration. After the circuit wires and thermostat control switch have thus been laid in the grooves, ducts and chamber of the block 19, an outer covering 28 of asbestos paper or other sheet insulation is pasted over the rear side of the block 19. Over the front flat face of the block 19 is applied a vertical strip or plate 29 of the same material as the walls of the hood and designed to cover the non-reflecting block 19 and give a maximum heat and light reflecting capacity to the interior walls of the hood. Preferably, and as herein shown, the loi'igitudinal margins of the plate 29 are rearwardly bent or beveled as shown at 29.

To the back of the hood is centrally ap plied a handle 31; and the block 19, sheet 28, reflector plate 29, and handle 81, are all united together and to the rear wall of the hood 10 by a pair of through bolts 32.

To the block 19 and reflector plate 29 is attached, by a pair of long screws 33, the longitudinally split twin lamp socket 234-, the two parts of which are also united by the screws 33; and in said socket are mounted the upwardly and downwardly extending lamp bulbs 35 and 36. The stem of the lamp socket 3 1 is, of course, formed with suitable ducts registering with the ducts 27 in the block 19 to accommodate the circuit wires leading to the filament terminals of the lamp bulbs.

The cord 24- is, of course, made amply long to enable the lamp to be served from a wall or ceiling socket, and is preferably equipped, in addition to the usual plug 37, with a snap switch 38.

The entire structure as above described is light, substantial, and easily portable, and is especially useful for local application to various portions of the body of a patient reclining in bed. It also serves as an excellent bed warmer by simply placing it be neath the bed coverings, and turning on the light, and when so used the thermostat control prevents the appliance from overheating or danger of causing fire, b automatically cutting oil the current when t 1e heat becomes excessive or dangerous. The border frame at the mouth of the hood being of heat insulating material, the same may be laid directly upon the skin of a patient without any danger of burning or blistering, and when so applied, practically all of the theri'nic rays are sent directly onto the skin. The described mounting of the circuit cord and thermostat control within the hood of the lamp keeps the operating handle of the latter free from entanglement with the circuit cord, and it also keeps the entire reflecting surface of the hood free from obstruction by the said cord. In the event of repairs being required,

the entire striiictiilre is readily disassemliled by merely withdrawing the screws 33 and the bolts While I have herein shown and described one practical and useful physical embodiment of the invention, it is manifest that changes of form, proportions, and structural details may be resorted to without altering the substantial character of the device or reducing its functional utility and capacity. Hence, I do not limit the invention to the particular embodiment disclosed for purposes of illustration, but reserve all such variations and modifications as fall within the spirit and purview of the appended claims.

I claim 1. In a portable therapeutic lamp, the combination of a reflector hood, a block of insulation within said hood fitted to the wall thereof, and a handle on the outside of said hood opposite said block and having a mechanical connection to said block extending through the hood.

2. In a portable therapeutic lamp, the con'ibination of a reflector hood, a block of insulation inclosed within said hood and litted and attached to the wall thereof, and a lamp socket carried by said block.

8. In a portable therapeutic lamp,the com bination of a reflector hood, a block of insulation inclosed within said hood and fitted and attached to the rear wall thereof, said block being formed with a groove on its rear side and transverse ducts, a lamp socket attached to the front of said block, and circuit wires to said lamp socket laid in said groove and extending through said ducts.

4:. In a portable therapeutic lamp, the combination of'a reflector hood, a block of insulation fitted and attached to the rear wall of and inclosed within said hood and formed with longitudinal and transverse grooves on its rear side and with transverse ducts conimunicating with said transverse grooves, lamp socket attached to the front of said block, circuit wires to said lamp socket laid in said grooves and extending tln'ougli said ducts, and a sheet of insulation on the rear side of said. block covering said grooves.

In a portable therapeutic lamp, the combination of a reflector hood comprising a rear wall, outwardly flaring side walls, and top and bottom walls, a block of insulation attached to said rear wall, a reflector plate covering the front side of said block, a lamp socket applied to said reflector plate, and fastening screws passed through said lamp socket and reflector plate into said block.

(3. In a portable therapeutic lamp, the combination of a reflector hood, an insulation block applied to the inner side of the rear wall of said hood, a reflector plate covering the front side of said block, a handle applied to the outer side of the rear wall of said iii) hood, bolts passed through and uniting said handle, rear wall, insulation block and reflector plate, a lamp socket applied to the front side of said reflector plate, and fastening screws passed through said lamp socket and reflector plate into said block.

7. In a portable therapeutic lamp, the combination of a sheet-metal reflector hood, an electric lamp mounted in said hood, and a wooden frame attached to and covering the margins of said hood.

8. In a portable therapeutic lamp,the combination of a sheet-metal reflector hood, an electric lamp mounted in said hood, a frame less pliant than the hood of heat insulating material and formed with kerfs into which the marginal portions of said hood are fitted, and means securing said marginal portions within the kerfs of said frame.

9. In a portable therapeutic lamp,the combination of a sheet-metal reflector hood formed with a rear wall, outwardly flaring flat side walls, and flat top and bottom walls, an electric lamp mounted in said hood, a rectangular wooden frame formed with kerfs into which the marginal portions of said side and top walls are fitted, means for securing said marginal portions within the kerfs of said frame, and angle brackets attached to and rigidly uniting the members of said frame at the corners of the latter.

10. In a portable therapeutic lamp, the combination of a reflector hood, a block of insulation attached tothe rear wall of said hood and formed with a groove and ducts and a chamber, a lamp socket attached to the front of said block, circuit wires to said. lamp socket laid in said groove and extending through said ducts, and a thermostat control device housed in said chamber and interposed in one of said circuit wires.

11. In a portable therapeutic lamp, the combination of a reflector hood, a block of insulation attached to the rear wall of said hood, and 'formed in its rear side with grooves and a chamber, and with transverse ducts communicating-with said grooves, a lamp socket removably attached to the front of said block, circuit wires to said lamp socket laid in said grooves and extending through said ducts, and a" thermostat switch housed in said chamber and interposedin one of said circuit wires.

12. In a portable therapeutic lamp, the combination of a reflector hood, a block of insulation inclosed within said hood and fitted and attached to the rear wall thereof, a lamp socket carried by said block, and a reflector plate attached to and covering the front side of said block.

18. In a portable therapeutic lamp, the combination of a sheet metal reflector hood, an electric lamp mounted in said hood, and a frame less pliant than the hood of heat insulating material and secured to the marginal portions of said hood.

In witness of the foregoing I aflix my signature.

NORRIS E. GOODRICH. 

